CN214036022U

CN214036022U - Piston rod sealing device of double-acting diaphragm compressor

Info

Publication number: CN214036022U
Application number: CN202022456895.3U
Authority: CN
Inventors: 尤健清; 王惠民
Original assignee: TAICANG MINGYU SEAL CO Ltd
Current assignee: TAICANG MINGYU SEAL CO Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-08-24
Anticipated expiration: 2030-10-30

Abstract

The utility model discloses a piston rod sealing device of double-acting diaphragm compressor, including the piston main part, the outside sliding connection of piston main part has first sealing washer, first supporting ring is installed to the up end of first sealing washer, the second support ring is all installed to the both sides of first supporting ring, the second sealing washer is all installed to the both sides of second support ring, the third sealing washer is installed to the up end of first supporting ring, the outside of piston main part upper end is located the up end fixed mounting of third sealing washer and has the spacing ring, the outside sliding connection of spacing ring has the compression jar body, the both sides of the compression jar body all are provided with the water conservancy diversion hole, the up end fixed mounting of the compression jar body has the sealed spacer sleeve of second. The utility model discloses a carry out sealed operation to the piston rod position, be convenient for carry out the dismouting to seal structure, and effectively support increase of service life to the sealing washer.

Description

Piston rod sealing device of double-acting diaphragm compressor

Technical Field

The utility model relates to an air compressor technical field specifically is a piston rod sealing device of two effect diaphragm compressor.

Background

With the rapid development of social economy, the diaphragm compressor is a volumetric compressor with a special structure, is the highest compression mode in the field of gas compression, has the characteristics of large compression ratio, good sealing performance and no pollution of lubricating oil and other solid impurities to compressed gas, is widely applied to compression and conveying of various high-purity gases, precious rare gases, toxic and harmful gases and corrosive gases, and can be more widely applied along with the progress and development of scientific technology and the continuous improvement of the standard of living of people as an irreplaceable volumetric compressor.

However, the sealing performance of the piston rod part of the existing compressor is poor in the long-term use process, so that the compression efficiency is reduced, and the service life is shortened; thus, the existing need is not met, for which we propose a piston rod sealing arrangement for a double acting diaphragm compressor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two effect diaphragm compressor's piston rod sealing device to the leakproofness variation in the long-term use in the current compressor piston rod position that provides in solving above-mentioned background art causes compression efficiency to reduce, and life shortens the scheduling problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a piston rod sealing device of two effect diaphragm compressor, includes the piston main part, the outside sliding connection of piston main part has first sealing washer, first supporting ring is installed to the up end of first sealing washer, the second support ring is all installed to the both sides of first supporting ring, the second sealing washer is all installed to the both sides of second support ring, the third sealing washer is installed to the up end of first supporting ring, the outside of piston main part upper end is located the up end fixed mounting of third sealing washer and has the spacing ring, the outside sliding connection of spacing ring has the compression jar body, the both sides of the compression jar body all are provided with the water conservancy diversion hole, the up end fixed mounting of the compression jar body has the sealed spacer sleeve of second.

Preferably, a support frame is installed on the inner side of the second sealing separation sleeve, and a sealing cover is installed on the outer side of the upper end of the support frame.

Preferably, one side fixed mounting of the sealed spacer of second has first sealed spacer, the spring mount pad is installed to the inboard of first sealed spacer, supporting spring is installed to the lower terminal surface of spring mount pad, the inboard sliding connection that the bottom of supporting spring is located first sealed spacer bottom has movable water conservancy diversion piece, the equal fixed mounting of lower terminal surface of support frame and activity water conservancy diversion piece has the diaphragm installation piece.

Preferably, the piston rod is connected to the inner side of the bottom end of the piston main body through a positioning pin, a groove is formed in the outer side of the upper end of the sealing cover, the limiting ring is connected and arranged on the inner side of the groove through an O-shaped ring, and the limiting ring is fixedly connected with the piston main body through a screw.

Preferably, the both sides of first support ring all are provided with the constant head tank, the second support ring sets up the inboard at the constant head tank, the both sides of second support ring all are connected through the second sealing washer with first support ring.

Preferably, the support frame is in threaded connection with the sealing cover and the second sealing separation sleeve, the sealing cover is connected with the second sealing separation sleeve through the sealing gasket, and the bottom end of the support frame is fixedly connected with the diaphragm mounting block through a screw.

Preferably, the inner side of the first sealing separation sleeve is provided with a sealing block, the upper end of the spring mounting seat is connected with the sealing block through threads, and the spring mounting seat is connected with the movable flow guide block through a supporting spring.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a be provided with the recess in the outside of sealed lid upper end, the spacing ring is connected through O type circle and is set up in the inboard of recess for can carry on spacingly to first support ring, second support ring, first sealing washer and second sealing washer through the spacing ring, guarantee the stability of seal structure, and be convenient for dismouting;

2. the utility model discloses a both sides and the first support ring of second support ring all are connected through the second sealing washer, can effectively stereotype support to first sealing washer, second sealing washer and third sealing washer through first support ring and second support ring, guarantee sealed stability, life is more of a specified duration.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

FIG. 2 is a schematic view of a partial cross-sectional structure of the compressed tank of the present invention;

fig. 3 is a schematic view of a partial cross-sectional structure of the piston body according to the present invention;

fig. 4 is a schematic view of a local cross-sectional structure of the flow guide hole of the present invention.

In the figure: 1. compressing the tank body; 2. a flow guide hole; 3. a sealing cover; 4. a piston body; 5. a diaphragm mounting block; 6. a support frame; 7. a movable flow guide block; 8. a support spring; 9. a spring mount; 10. a first seal spacer sleeve; 11. a second sealed spacer sleeve; 12. a limiting ring; 13. a first support ring; 14. a second support ring; 15. a first seal ring; 16. a second seal ring; 17. and a third sealing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 4, the present invention provides an embodiment: a piston rod sealing device of a double-acting diaphragm compressor comprises a piston main body 4, a first sealing ring 15 is connected to the outer side of the piston main body 4 in a sliding mode, a first supporting ring 13 is installed on the upper end face of the first sealing ring 15, second supporting rings 14 are installed on the two sides of the first supporting ring 13, second sealing rings 16 are installed on the two sides of the second supporting ring 14, a third sealing ring 17 is installed on the upper end face of the first supporting ring 13, a limiting ring 12 is fixedly installed on the upper end face, located on the upper end face of the third sealing ring 17, of the outer side of the upper end of the piston main body 4, the first supporting ring 13, the second supporting ring 14, the first sealing ring 15 and the second sealing rings 16 can be limited through the limiting ring 12, stability of a sealing structure is guaranteed, disassembly and assembly are convenient, a compression tank body 1 is connected to the outer side of the limiting ring 12 in a sliding mode, flow guide holes 2 are formed in the two sides of the compression tank body 1, and a second sealing separation sleeve 11 is fixedly installed on the upper end face of the compression tank body 1, wholly through carrying out sealed operation to the piston rod position, be convenient for carry out the dismouting to seal structure, and effectively support increase of service life to the sealing washer.

Further, a support frame 6 is installed on the inner side of the second sealing separation sleeve 11, and a sealing cover 3 is installed on the outer side of the upper end of the support frame 6.

Through adopting above-mentioned technical scheme, be convenient for fix a position and seal support frame 6 through sealed lid 3, and then improve support frame 6's safety in utilization.

Further, a first sealing separation sleeve 10 is fixedly mounted on one side of a second sealing separation sleeve 11, a spring mounting seat 9 is mounted on the inner side of the first sealing separation sleeve 10, a supporting spring 8 is mounted on the lower end face of the spring mounting seat 9, a movable flow guide block 7 is slidably connected to the inner side, located at the bottom end of the first sealing separation sleeve 10, of the bottom end of the supporting spring 8, and a diaphragm mounting block 5 is fixedly mounted on the lower end faces of the supporting frame 6 and the movable flow guide block 7.

By adopting the technical scheme, one of the diaphragm mounting blocks 5 is limited by the movable flow guide block 7, so that the movable flow guide block 7 can drive the diaphragm mounting block 5 to slide on the inner side of the first sealing separation sleeve 10.

Further, the inner side of the bottom end of the piston main body 4 is connected with a piston rod through a positioning pin, the outer side of the upper end of the sealing cover 3 is provided with a groove, the limiting ring 12 is connected and arranged on the inner side of the groove through an O-shaped ring, and the limiting ring 12 and the piston main body 4 are fixedly connected through screws.

Through adopting above-mentioned technical scheme, can carry on spacingly to first support ring 13, second support ring 14, first sealing washer 15 and second sealing washer 16 through spacing ring 12, guarantee seal structure's stability, and the dismouting of being convenient for.

Further, the both sides of first support ring 13 all are provided with the constant head tank, and second support ring 14 sets up the inboard at the constant head tank, and the both sides of second support ring 14 all are connected through second sealing washer 16 with first support ring 13.

Through adopting above-mentioned technical scheme, can effectively stereotype the support to first sealing washer 15, second sealing washer 16 and third sealing washer 17 through first support ring 13 and second support ring 14, guarantee sealed stability, life is more of a specified duration.

Further, the support frame 6 is in threaded connection with the sealing cover 3 and the second sealing separation sleeve 11, the sealing cover 3 is in sealing gasket connection with the second sealing separation sleeve 11, and the bottom end of the support frame 6 is fixedly connected with the diaphragm mounting block 5 through screws.

Through adopting above-mentioned technical scheme, be convenient for carry out the dismouting to diaphragm installation piece 5, and support frame 6's leakproofness is high.

Further, a sealing block is arranged on the inner side of the first sealing separation sleeve 10, the upper end of the spring mounting seat 9 is connected with the sealing block through threads, and the spring mounting seat 9 is connected with the movable flow guide block 7 through a supporting spring 8.

Through adopting above-mentioned technical scheme for first sealed spacer sleeve 10 can separate, causes gas leakage when avoiding compressing gas.

The working principle is as follows: when in use, whether the functions of all parts are intact is checked, the inner side of the bottom end of the piston main body 4 is connected with a piston rod through a positioning pin, the piston rod can drive the piston main body 4 to reciprocate on the inner side of the compression tank body 1, the outer side of the upper end of the sealing cover 3 is provided with a groove, the limiting ring 12 is connected and arranged on the inner side of the groove through an O-shaped ring, so that the first support ring 13, the second support ring 14, the first sealing ring 15 and the second sealing ring 16 can be limited through the limiting ring 12, the stability of the sealing structure is ensured, the disassembly and the assembly are convenient, the positioning grooves are arranged on the two sides of the first support ring 13, the second support ring 14 is arranged on the inner side of the positioning grooves, the two sides of the second support ring 14 are connected with the first support ring 13 through the second sealing ring 16, and the first support ring 13 and the second support ring 14 can effectively shape, guarantee sealed stability, life is more of a specified duration, and first sealed spacer 10 all fixes the inboard in 1 one end of the compression jar body through the screw connection with the sealed spacer 11 of second for first sealed spacer 10 can separate, causes gas leakage when avoiding compressing gas.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A piston rod sealing device of a double-acting diaphragm compressor, comprising a piston body (4), characterized in that: the outside sliding connection of piston main part (4) has first sealing washer (15), first supporting ring (13) is installed to the up end of first sealing washer (15), second supporting ring (14) are all installed to the both sides of first supporting ring (13), second sealing washer (16) are all installed to the both sides of second supporting ring (14), third sealing washer (17) are installed to the up end of first supporting ring (13), the outside that piston main part (4) upper end is located the up end fixed mounting of third sealing washer (17) has spacing ring (12), the outside sliding connection of spacing ring (12) has the compression jar body (1), the both sides of the compression jar body (1) all are provided with water conservancy diversion hole (2), the up end fixed mounting of the compression jar body (1) has the sealed partition sleeve of second (11).

2. A piston rod sealing arrangement of a double acting diaphragm compressor according to claim 1, wherein: the inner side of the second sealing separation sleeve (11) is provided with a support frame (6), and the outer side of the upper end of the support frame (6) is provided with a sealing cover (3).

3. A piston rod sealing arrangement of a double acting diaphragm compressor according to claim 2, wherein: one side fixed mounting of sealed spacer sleeve of second (11) has first sealed spacer sleeve (10), spring mount pad (9) are installed to the inboard of first sealed spacer sleeve (10), supporting spring (8) are installed to the lower terminal surface of spring mount pad (9), the inboard sliding connection that the bottom of supporting spring (8) is located first sealed spacer sleeve (10) bottom has movable water conservancy diversion piece (7), the equal fixed mounting of lower terminal surface of support frame (6) and activity water conservancy diversion piece (7) has diaphragm installation piece (5).

4. A piston rod sealing arrangement of a double acting diaphragm compressor according to claim 2, wherein: the piston is characterized in that the inner side of the bottom end of the piston main body (4) is connected with a piston rod through a positioning pin, the outer side of the upper end of the sealing cover (3) is provided with a groove, the limiting ring (12) is connected and arranged on the inner side of the groove through an O-shaped ring, and the limiting ring (12) is fixedly connected with the piston main body (4) through a screw.

5. A piston rod sealing arrangement of a double acting diaphragm compressor according to claim 1, wherein: the both sides of first support ring (13) all are provided with the constant head tank, second support ring (14) set up the inboard at the constant head tank, the both sides of second support ring (14) all are connected through second sealing washer (16) with first support ring (13).

6. A piston rod sealing arrangement of a double acting diaphragm compressor according to claim 2, wherein: the supporting frame (6) is in threaded connection with the sealing cover (3) and the second sealing separation sleeve (11), the sealing cover (3) is connected with the second sealing separation sleeve (11) through a sealing gasket, and the bottom end of the supporting frame (6) is fixedly connected with the diaphragm mounting block (5) through screws.

7. A piston rod sealing arrangement of a double acting diaphragm compressor according to claim 3, wherein: the inner side of the first sealing separation sleeve (10) is provided with a sealing block, the upper end of the spring mounting seat (9) is connected with the sealing block through threads, and the spring mounting seat (9) is connected with the movable flow guide block (7) through a supporting spring (8).